arkei | d75d7b0534ff648f16f5751be79a2c23158b6412a780180aec78c77c7e95071d

Analysis

max time kernel
150s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2022 05:29

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General

Target

zxcvb.exe
Size

586KB
MD5

131a32033cf88976a8df48361b90207d
SHA1

ce260393460fa5d4cbfa17d3329fd33594810add
SHA256

d75d7b0534ff648f16f5751be79a2c23158b6412a780180aec78c77c7e95071d
SHA512

120a4ef120c7b2d4c07af7e6418eaf83d7f3d41ba13f41ce2e494f76182c4b07fd16ec2ceaf1937ba3e76ecb9149cc42edba315e818dad09882cf77a62f6c708

Score

10^/10

arkei raccoon 8a4fd4b44997ba634230ba5c422ca9f2 default stealer

Malware Config

Extracted

Family

raccoon

Botnet

8a4fd4b44997ba634230ba5c422ca9f2

http://193.106.191.146/

http://185.215.113.89/

rc4.plain

Extracted

Family

arkei

Botnet

Default

Signatures

Arkei
Arkei is an infostealer written in C++.
stealer arkei
Raccoon
Raccoon is an infostealer written in C++ and first seen in 2019.
stealer raccoon

Raccoon Stealer payload 3 IoCs

resource	yara_rule
behavioral2/memory/884-141-0x0000000000400000-0x0000000000411000-memory.dmp	family_raccoon
behavioral2/memory/884-143-0x0000000000400000-0x0000000000411000-memory.dmp	family_raccoon
behavioral2/memory/884-148-0x0000000000400000-0x0000000000411000-memory.dmp	family_raccoon

Executes dropped EXE 1 IoCs

pid	Process
1336	Mccegjkqnoydj.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\International\Geo\Nation	zxcvb.exe

Loads dropped DLL 2 IoCs

pid	Process
1248	InstallUtil.exe
1248	InstallUtil.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3492 set thread context of 884	3492	zxcvb.exe	87
PID 1336 set thread context of 1248	1336	Mccegjkqnoydj.exe	88

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1840	1248	WerFault.exe	88

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
3492	zxcvb.exe
3492	zxcvb.exe
3492	zxcvb.exe
3492	zxcvb.exe
3492	zxcvb.exe
3492	zxcvb.exe
3492	zxcvb.exe
3492	zxcvb.exe
3492	zxcvb.exe
3492	zxcvb.exe
1336	Mccegjkqnoydj.exe
1336	Mccegjkqnoydj.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3492	zxcvb.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 3492 wrote to memory of 1336	3492	zxcvb.exe	84
PID 3492 wrote to memory of 1336	3492	zxcvb.exe	84
PID 3492 wrote to memory of 1336	3492	zxcvb.exe	84
PID 3492 wrote to memory of 4372	3492	zxcvb.exe	85
PID 3492 wrote to memory of 4372	3492	zxcvb.exe	85
PID 3492 wrote to memory of 4372	3492	zxcvb.exe	85
PID 3492 wrote to memory of 1352	3492	zxcvb.exe	86
PID 3492 wrote to memory of 1352	3492	zxcvb.exe	86
PID 3492 wrote to memory of 1352	3492	zxcvb.exe	86
PID 3492 wrote to memory of 884	3492	zxcvb.exe	87
PID 3492 wrote to memory of 884	3492	zxcvb.exe	87
PID 3492 wrote to memory of 884	3492	zxcvb.exe	87
PID 3492 wrote to memory of 884	3492	zxcvb.exe	87
PID 3492 wrote to memory of 884	3492	zxcvb.exe	87
PID 3492 wrote to memory of 884	3492	zxcvb.exe	87
PID 3492 wrote to memory of 884	3492	zxcvb.exe	87
PID 3492 wrote to memory of 884	3492	zxcvb.exe	87
PID 3492 wrote to memory of 884	3492	zxcvb.exe	87
PID 1336 wrote to memory of 1248	1336	Mccegjkqnoydj.exe	88
PID 1336 wrote to memory of 1248	1336	Mccegjkqnoydj.exe	88
PID 1336 wrote to memory of 1248	1336	Mccegjkqnoydj.exe	88
PID 1336 wrote to memory of 1248	1336	Mccegjkqnoydj.exe	88
PID 1336 wrote to memory of 1248	1336	Mccegjkqnoydj.exe	88
PID 1336 wrote to memory of 1248	1336	Mccegjkqnoydj.exe	88
PID 1336 wrote to memory of 1248	1336	Mccegjkqnoydj.exe	88
PID 1336 wrote to memory of 1248	1336	Mccegjkqnoydj.exe	88
PID 1336 wrote to memory of 1248	1336	Mccegjkqnoydj.exe	88
PID 1336 wrote to memory of 1248	1336	Mccegjkqnoydj.exe	88

C:\Users\Admin\AppData\Local\Temp\zxcvb.exe
"C:\Users\Admin\AppData\Local\Temp\zxcvb.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3492
- C:\Users\Admin\AppData\Local\Temp\Mccegjkqnoydj.exe
  "C:\Users\Admin\AppData\Local\Temp\Mccegjkqnoydj.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1336
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
    3⤵
    - Loads dropped DLL
    PID:1248
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1248 -s 1308
      4⤵
      Program crash
      PID:1840
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  PID:4372
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  PID:1352
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  PID:884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1248 -ip 1248
1⤵
PID:3528

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\mozglue.dll

Filesize
133KB

MD5
8f73c08a9660691143661bf7332c3c27

SHA1
37fa65dd737c50fda710fdbde89e51374d0c204a

SHA256
3fe6b1c54b8cf28f571e0c5d6636b4069a8ab00b4f11dd842cfec00691d0c9cd

SHA512
0042ecf9b3571bb5eba2de893e8b2371df18f7c5a589f52ee66e4bfbaa15a5b8b7cc6a155792aaa8988528c27196896d5e82e1751c998bacea0d92395f66ad89

Download Submit
C:\ProgramData\nss3.dll

Filesize
1.2MB

MD5
bfac4e3c5908856ba17d41edcd455a51

SHA1
8eec7e888767aa9e4cca8ff246eb2aacb9170428

SHA256
e2935b5b28550d47dc971f456d6961f20d1633b4892998750140e0eaa9ae9d78

SHA512
2565bab776c4d732ffb1f9b415992a4c65b81bcd644a9a1df1333a269e322925fc1df4f76913463296efd7c88ef194c3056de2f1ca1357d7b5fe5ff0da877a66

Download Submit
C:\Users\Admin\AppData\Local\Temp\Mccegjkqnoydj.exe

Filesize
341KB

MD5
e96634c20057c1643a303d6266321035

SHA1
5f074a2f48911fa04995ab2bad95f6e66f228ebe

SHA256
58ca86e49e4dea36ec81072c6e63fb8d6b465447d3c1fc1443d15e897c13d27c

SHA512
0d927b650ef8029636681a4ba16637bda30336756586038818c0b75c2fddba0d83b6e4a51ece8a8c05a4deb13dc93e5bd23ae36024349a901c27909144725ebb

Download Submit
C:\Users\Admin\AppData\Local\Temp\Mccegjkqnoydj.exe

Filesize
341KB

MD5
e96634c20057c1643a303d6266321035

SHA1
5f074a2f48911fa04995ab2bad95f6e66f228ebe

SHA256
58ca86e49e4dea36ec81072c6e63fb8d6b465447d3c1fc1443d15e897c13d27c

SHA512
0d927b650ef8029636681a4ba16637bda30336756586038818c0b75c2fddba0d83b6e4a51ece8a8c05a4deb13dc93e5bd23ae36024349a901c27909144725ebb

Download Submit
memory/884-148-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/884-143-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/884-141-0x0000000000400000-0x0000000000411000-memory.dmp

Filesize
68KB

Download
memory/1248-147-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1248-145-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1248-149-0x0000000000400000-0x000000000043D000-memory.dmp

Filesize
244KB

Download
memory/1248-150-0x0000000060900000-0x0000000060992000-memory.dmp

Filesize
584KB

Download
memory/1336-137-0x00000000001A0000-0x00000000001FC000-memory.dmp

Filesize
368KB

Download
memory/3492-130-0x00000000004E0000-0x0000000000578000-memory.dmp

Filesize
608KB

Download
memory/3492-133-0x0000000004FB0000-0x0000000004FBA000-memory.dmp

Filesize
40KB

Download
memory/3492-132-0x0000000004F10000-0x0000000004FA2000-memory.dmp

Filesize
584KB

Download
memory/3492-131-0x00000000055C0000-0x0000000005B64000-memory.dmp

Filesize
5.6MB

Download